Class TByteObjectMapDecorator<V>

java.lang.Object
java.util.AbstractMap<Byte,V>
gnu.trove.decorator.TByteObjectMapDecorator<V>
All Implemented Interfaces:
Externalizable, Serializable, Cloneable, Map<Byte,V>

public class TByteObjectMapDecorator<V> extends AbstractMap<Byte,V> implements Map<Byte,V>, Externalizable, Cloneable

Wrapper class to make a TByteObjectMap conform to the java.util.Map API. This class simply decorates an underlying TByteObjectMap and translates the Object-based APIs into their Trove primitive analogs.

Note that wrapping and unwrapping primitive values is extremely inefficient. If possible, users of this class should override the appropriate methods in this class and use a table of canonical values.

Created: Mon Sep 23 22:07:40 PDT 2002
See Also:
  • Field Details

  • Constructor Details

    • TByteObjectMapDecorator

      public TByteObjectMapDecorator()
      FOR EXTERNALIZATION ONLY!!
    • TByteObjectMapDecorator

      public TByteObjectMapDecorator(TByteObjectMap<V> map)
      Creates a wrapper that decorates the specified primitive map.
      Parameters:
      map - the TByteObjectMap to wrap.
  • Method Details

    • getMap

      public TByteObjectMap<V> getMap()
      Returns a reference to the map wrapped by this decorator.
      Returns:
      the wrapped TByteObjectMap instance.
    • put

      public V put(Byte key, V value)
      Inserts a key/value pair into the map.
      Specified by:
      put in interface Map<Byte,V>
      Overrides:
      put in class AbstractMap<Byte,V>
      Parameters:
      key - an Byte value
      value - an Object value
      Returns:
      the previous value associated with key, or null if none was found.
    • get

      public V get(Object key)
      Retrieves the value for key
      Specified by:
      get in interface Map<Byte,V>
      Overrides:
      get in class AbstractMap<Byte,V>
      Parameters:
      key - an Object value
      Returns:
      the value of key or null if no such mapping exists.
    • clear

      public void clear()
      Empties the map.
      Specified by:
      clear in interface Map<Byte,V>
      Overrides:
      clear in class AbstractMap<Byte,V>
    • remove

      public V remove(Object key)
      Deletes a key/value pair from the map.
      Specified by:
      remove in interface Map<Byte,V>
      Overrides:
      remove in class AbstractMap<Byte,V>
      Parameters:
      key - an Object value
      Returns:
      the removed value, or Integer(0) if it was not found in the map
    • entrySet

      public Set<Map.Entry<Byte,V>> entrySet()
      Returns a Set view on the entries of the map.
      Specified by:
      entrySet in interface Map<Byte,V>
      Specified by:
      entrySet in class AbstractMap<Byte,V>
      Returns:
      a Set value
    • containsValue

      public boolean containsValue(Object val)
      Checks for the presence of val in the values of the map.
      Specified by:
      containsValue in interface Map<Byte,V>
      Overrides:
      containsValue in class AbstractMap<Byte,V>
      Parameters:
      val - an Object value
      Returns:
      a boolean value
    • containsKey

      public boolean containsKey(Object key)
      Checks for the present of key in the keys of the map.
      Specified by:
      containsKey in interface Map<Byte,V>
      Overrides:
      containsKey in class AbstractMap<Byte,V>
      Parameters:
      key - an Object value
      Returns:
      a boolean value
    • size

      public int size()
      Returns the number of entries in the map.
      Specified by:
      size in interface Map<Byte,V>
      Overrides:
      size in class AbstractMap<Byte,V>
      Returns:
      the map's size.
    • isEmpty

      public boolean isEmpty()
      Indicates whether map has any entries.
      Specified by:
      isEmpty in interface Map<Byte,V>
      Overrides:
      isEmpty in class AbstractMap<Byte,V>
      Returns:
      true if the map is empty
    • putAll

      public void putAll(Map<? extends Byte,? extends V> map)
      Copies the key/value mappings in map into this map. Note that this will be a deep copy, as storage is by primitive value.
      Specified by:
      putAll in interface Map<Byte,V>
      Overrides:
      putAll in class AbstractMap<Byte,V>
      Parameters:
      map - a Map value
    • wrapKey

      protected Byte wrapKey(byte k)
      Wraps a key
      Parameters:
      k - key in the underlying map
      Returns:
      an Object representation of the key
    • unwrapKey

      protected byte unwrapKey(Byte key)
      Unwraps a key
      Parameters:
      key - wrapped key
      Returns:
      an unwrapped representation of the key
    • readExternal

      public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException
      Specified by:
      readExternal in interface Externalizable
      Throws:
      IOException
      ClassNotFoundException
    • writeExternal

      public void writeExternal(ObjectOutput out) throws IOException
      Specified by:
      writeExternal in interface Externalizable
      Throws:
      IOException